I'm planning to visit the Magic Castle using my subscription. How is the dynamic? Do I call the castle and give ... name, any subscription number?

For the "one visit yearly" policy, how is counted the year? calendar year (january - february) subscription year (reseting the count when renew time) or if I visit the club in May I could visit again next May passing one year? Just for know. I really don't know when I will stay again in L.A. after this visit but it is always good to know.